/Engine/Source/Runtime/AugmentedReality/Public/ARDependencyHandler.h
Call "UARBlueprintLibrary::StartARSession" to start the session. Alternatively, you can also call "StartARSessionLatent" which handles dependency and permission internally.
class UARDependencyHandler : public [UObject](API\Runtime\CoreUObject\UObject\UObject), public [IModularFeature](API\Runtime\Core\Features\IModularFeature)